Pen Settings

HTML

CSS

CSS Base

Vendor Prefixing

Add External Stylesheets/Pens

Any URL's added here will be added as <link>s in order, and before the CSS in the editor. If you link to another Pen, it will include the CSS from that Pen. If the preprocessor matches, it will attempt to combine them before processing.

+ add another resource

JavaScript

Babel is required to process package imports. If you need a different preprocessor remove all packages first.

Add External Scripts/Pens

Any URL's added here will be added as <script>s in order, and run before the JavaScript in the editor. You can use the URL of any other Pen and it will include the JavaScript from that Pen.

+ add another resource

Behavior

Save Automatically?

If active, Pens will autosave every 30 seconds after being saved once.

Auto-Updating Preview

If enabled, the preview panel updates automatically as you code. If disabled, use the "Run" button to update.

Format on Save

If enabled, your code will be formatted when you actively save your Pen. Note: your code becomes un-folded during formatting.

Editor Settings

Code Indentation

Want to change your Syntax Highlighting theme, Fonts and more?

Visit your global Editor Settings.

HTML

              
                <div id="app">
  <div id="sketch-holder"></div>
</div>
              
            
!

CSS

              
                body {
  padding: 0;
  margin: 0;
  background: rgb(230, 230, 230);
  position: fixed;
  top: 50%;
  left: 50%;
  -webkit-transform: translate(-50%, -50%);
          transform: translate(-50%, -50%);
}

label {
  margin-top: 10px;
  display: block;
}

#controls {
  display: flex;
}
              
            
!

JS

              
                // NOTE: This was slapped together for a limited purpose and I'm doing a bunch of stuff you're not "supposed" to do. Maybe don't try to learn too much for it. Or do. You'll be fine either way :D

class Petal {
 constructor(index, x, y, diameter, round, fillColor, strokeColor, strokeWeight) {
   this.index = index
   this.x = x
   this.y = y
   this.diameter = diameter
   this.angle = getPetalAngle(x, y)
   this.round = round
   this.fillColor = fillColor
   this.strokeColor = strokeColor
   this.strokeWeight = strokeWeight
 } 
 
  drawPetal(sketch) {
   sketch.strokeWeight(this.strokeWeight)
   sketch.stroke(this.strokeColor)
   sketch.fill(this.fillColor)
   sketch.ellipse(this.x, this.y, this.diameter)
  }
 
}

function getPetalAngle(petalX, petalY){
  // use atan2 to find the angle [theta - in radians] from the origin of the shape to the new petal's center  
  let theta = Math.atan2(petalY - 500, petalX - 500) 
  // Convert radians to degrees [-180 > 180]
  theta *= 180 / Math.PI
  // convert degrees [-180 to 180] to [0 to 360] for convenience
  if (theta < 0) theta = 360 + theta

  theta = Math.round(theta)

  // return angle data to the method that called it
  return theta
}


var app = new Vue({
  el: '#app',
  data() {
    return {
      p5Ref: {},
      ellipseOrigin: {
        x: 500,
        y: 500
      },
      ellipseRadius: 40,
      numRounds: 8,
      allPetals: [],
      highlightColor: [20, 60, 90, 0.3],
      fillColorArray: [
        [50, 60, 50, 0.1],
        [100, 60, 50, 0.1],
        [150, 60, 50, 0.1],
        [200, 60, 50, 0.1],
        [250, 60, 50, 0.1],
        [300, 60, 50, 0.1]
      ],
      strokeColorArray: [
        [100, 0, 0, 1],
        [0, 0, 0, 1]
      ],
      textColorArray: [
        [100, 0, 100, 1]
      ],
      strokeWeight: 1,
      rowIterator: 1,
      radiusIterator: 2,
      colorIterator: 0.02,
      diameterIterator: 0.2
    }
  },
  watch: {
    ellipseRadius: function (newVal) {
      this.allPetals = []
      this.getPetalPositions(this.p5Ref)
    },
    strokeWeight: function (newVal) {
      this.allPetals = []
      this.getPetalPositions(this.p5Ref)
    },
    numRounds: function (newVal) {
      this.allPetals = []
      this.getPetalPositions(this.p5Ref)
    }
  },
  methods: {
    getPetalPositions(sketch) {
      var firstIntersection = 0
      var petalCount = 0
      var offset, petal

      for (let roundCount = 0; roundCount < this.numRounds; roundCount++){
        offset = 360 / (roundCount * 6) 

        if (roundCount === 0) {
          petal = new Petal(petalCount, this.ellipseOrigin.x, this.ellipseOrigin.y, this.ellipseRadius * 2, roundCount, this.fillColorArray[(roundCount + this.fillColorArray.length - 1) % this.fillColorArray.length], this.strokeColorArray[0], this.strokeWeight)     
          this.allPetals.push(petal)
          petalCount++
        }

        for (let i = 0; i < roundCount * 6; i++) {
          var offset, petal

          if (roundCount === 1 && i === 0) {
            petal = new Petal(petalCount, 
                              this.ellipseOrigin.x + this.ellipseRadius * sketch.cos(0), 
                              this.ellipseOrigin.y + this.ellipseRadius * sketch.sin(0), 
                              this.ellipseRadius * 2, 
                              roundCount, 
                              this.fillColorArray[(roundCount + this.fillColorArray.length - 1) % this.fillColorArray.length], 
                              this.strokeColorArray[0],
                              this.strokeWeight)
          } else {
            let intersectionCoordinates = this.getIntersection(this.allPetals[petalCount - 1], this.allPetals[firstIntersection], this.ellipseRadius)
            petal = new Petal(petalCount, intersectionCoordinates.x, intersectionCoordinates.y, this.ellipseRadius * 2, roundCount, this.fillColorArray[(roundCount + this.fillColorArray.length - 1) % this.fillColorArray.length], this.strokeColorArray[0], this.strokeWeight)
          }

          this.allPetals.push(petal)
          petalCount++

          let vertexCalc = (petal.angle + offset) % 60 > 1

          if (i === roundCount * 6 - 1) {
            firstIntersection++
          } else if(vertexCalc){
            firstIntersection++
          }
        }
      } 
    },
    getIntersection(originator, intersected, radius) {
      var a, dx, dy, d, h, rx, ry;
      var x2, y2;

      /* dx and dy are the vertical and horizontal distances between
      * the circle centers.
      */
      dx = intersected.x - originator.x;
      dy = intersected.y - originator.y;

      /* Determine the straight-line distance between the centers. */
      d = Math.hypot(dx, dy);
      /* Check for solvability. */
      if (d > (radius + radius)) {
        /* no solution. circles do not intersect. */
        return false;
        }

      if (d < Math.abs(radius - radius)) {
        /* no solution. one circle is contained in the other */
        return false;
      }
      /* 'point 2' is the point where the line through the circle
       * intersection points crosses the line between the circle
       * centers.  
       */
      /* Determine the distance from point 0 to point 2. */
      a = ((radius*radius) - (radius*radius) + (d*d)) / (2.0 * d) ;
      /* Determine the coordinates of point 2. */
      x2 = originator.x + (dx * a/d);
      y2 = originator.y + (dy * a/d);
      /* Determine the distance from point 2 to either of the
       * intersection points.
       */
      h = Math.sqrt((radius*radius) - (a*a));
      /* Now determine the offsets of the intersection points from
       * point 2.
       */
      rx = -dy * (h/d);
      ry = dx * (h/d);
      /* Determine the absolute intersection points. */
      var intersection = {
        x: x2 - rx,
        y: y2 - ry
      }
      return intersection;
    },
    addRows(sketch) {
      if(this.numRounds > 15) {
        this.rowIterator = -1
      } else if (this.numRounds === 2) {
        this.rowIterator = 1
      }
      
      if(sketch.frameCount % 30 === 0) {
        this.numRounds += this.rowIterator
      }
      
      this.allPetals.forEach(position => position.drawPetal(sketch))
    },
    diameterChange(sketch) {
      if(this.ellipseRadius > 75) {
        this.radiusIterator = -0.5
      } else if (this.ellipseRadius < 20) {
        this.radiusIterator = 0.5
      }
      
      this.ellipseRadius += this.radiusIterator
      
      this.allPetals.forEach(position => position.drawPetal(sketch))
    },
    hueSpin(sketch){
      this.allPetals.forEach(position => {

        if(position.diameter > this.ellipseRadius * 3) this.diameterIterator = -0.2
        if(position.diameter < this.ellipseRadius) this.diameterIterator = 0.2
          
        position.diameter += this.diameterIterator
        position.fillColor[0] = (position.fillColor[0] + 0.05) % 360
        // position.fillColor[1] = (position.fillColor[1] + 0.002) % 100
        // position.fillColor[2] = (position.fillColor[1] + 0.002) % 100
        position.drawPetal(sketch)
      })
    },
    vertexHighlight(){
      this.allPetals.forEach(position => {
        if(position.angle % 60 === 0){
          position.fillColor = this.highlightColor
        }
      })
    }
  },
  mounted() {
    var viz = new p5(sketch => {
      this.p5Ref = sketch
      sketch.setup = () => {
        var canvas = sketch.createCanvas(1000, 1000)
        canvas.parent('sketch-holder')
        sketch.pixelDensity(1)
        sketch.frameRate(30)
        sketch.colorMode(sketch.HSB)
        this.getPetalPositions(sketch)
      }

      sketch.draw = () => {
        sketch.background(65)
        // if(sketch.frameCount < 600) {
        //   this.diameterChange(sketch)
        // } else if (sketch.frameCount < 1200) {
        //   this.addRows(sketch)        
        // }
        this.hueSpin(sketch)
      }
    })
   }
})








// function getActivePetals(activeRounds, minAngle, maxAngle){
//   var activeArray = []
//   activeRounds.forEach(round => {
//     var activeGroup = []
//     allPositions.forEach(position => {
//       if(position.round === round && maxAngle >= position.angle && minAngle <= position.angle) {
//         activeGroup.push(position)
//       }
//     })
//     activeArray.push(activeGroup)
//   })
//   return activeArray
// }
// // ALTERNATE ANIMATIONS
// function diameterChange() {
//   allPositions.forEach(position => {
//     console.log(position.x)
//     position.x += 1
//   })
// }
// function colorReset() {
//   allPositions.forEach(position => {
//     position.fillColor = fillColorArray[(position.round + fillColorArray.length - 1) % fillColorArray.length]
//     position.textColor = textColorArray[0]
//     position.strokeColor = strokeColorArray[0]
//   }) 
// }
// function randomChange(starter){
//   let newFill = [10, 10, 10, 1]
//   let seed = allPositions[starter]
//   seed.fillColor = [10, 10, 10, 1]
//   allPositions.forEach(position => {
//     let originatorActive = _.isEqual(_.sortBy(allPositions[position.originator].fillColor), _.sortBy(newFill))
//     let progenyActive = _.isEqual(_.sortBy(allPositions[position.firstIntersection].fillColor), _.sortBy(newFill))
//     if(originatorActive || progenyActive){
//       position.fillColor = newFill
//       position.drawPetal()
//     }
//   })

// }
// function roundSweep(frame) {
//   let color = [120, 30, 30, .8]
//   allPositions.forEach(position => {
//     position.fillColor = colorReset(position.round)
//     position.textColor = textColorArray[0]
//     if(position.round === frame / 2 % numRounds) {
//        position.fillColor = [100, 0, 0, 1]
//       position.textColor = 'green'
//     }
//     position.drawPetal()
//   })
// }
// function angleSweep(frame, span) {
//   let color = [120, 30, 30, .8]
//   let middlePoint = frameCount % 360
//   allPositions.forEach(position => {
//     position.fillColor = colorReset(position.round)
//     if(position.angle > middlePoint - span / 2 && position.angle < middlePoint + span / 2) {
//       position.fillColor = color
//     }
//   })
// }
// function sixthClick(frame) {
//   let color = [120, 30, 30, .8]
//   allPositions.forEach(position => {
//     let foo = position.angle1
//     if(position.angle === 30){
//       position.fillColor = color    
//     }
//   })
// }
// function vertexHighlight(){
//   allPositions.forEach(position => {
//     if(position.isVertex){
//       position.fillColor = [20, 60, 90, 0.3]
//     }
//   })
// }
// function diameterChange(frameCount){
//   allPositions.forEach(position => {
//     position.diamter += 0.3
//   })
// }
              
            
!
999px

Console